Sonderegger Pine

The Sonderegger Pine "(pinus sondereggeri)" is the only named southern pine hybrid. Another common name is the Bastard Pine. It is a naturally occurring cross between loblolly pine "(pinus taeda)" and longleaf pine "(pinus palustris)". It was originally described by H. H. Chapman (1922) who named it after its discoverer, V. H. Sonderegger, a state forester of Louisiana. This pine usually occurs singly or in small groups where both loblolly and longleaf pines overlap in range. Because the flowering of both parental trees usually occur at the same time of year, no phenological barrier exists, thus the two freely cross.

Tree characteristics are normally intermediate between loblolly and longleaf. Because this hybrid pine possesses heavy limbs and long-needled foliage like the longleaf pine, one may confuse Sonderegger Pine with Longleaf Pine. However, the striped brown bud of Sonderegger is a distinguishing characteristic as Longleaf possesses a white bud. Also, intermediate in size, the cone is armed similarly to a cone of the Loblolly Pine. Because no grass stage exists for this hybrid, it has significant height growth during the first year. Thus, it is easily detected in uniform plantings of longleaf pine.